video_splitter: Don't build panoramix on winrt

modules/video_splitter/Makefile.am

@@ -12,7 +12,9 @@ libpanoramix_plugin_la_SOURCES = video_splitter/panoramix.c
 libpanoramix_plugin_la_CFLAGS = $(AM_CFLAGS)
 libpanoramix_plugin_la_LIBADD = $(LIBM)
 if HAVE_WIN32
+if !HAVE_WINSTORE
 splitter_LTLIBRARIES += libpanoramix_plugin.la
+endif
 else
 if HAVE_XCB_RANDR
 libpanoramix_plugin_la_CFLAGS += $(XCB_RANDR_CFLAGS)